812271 has 8 divisors (see below), whose sum is σ = 1098160. Its totient is φ = 533952.

The previous prime is 812267. The next prime is 812281. The reversal of 812271 is 172218.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 812271 - 2² = 812267 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (812221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1636 + ... + 2073.

It is an arithmetic number, because the mean of its divisors is an integer number (137270).

2⁸¹²²⁷¹ is an apocalyptic number.

812271 is a deficient number, since it is larger than the sum of its proper divisors (285889).

812271 is a wasteful number, since it uses less digits than its factorization.

812271 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785.

The product of its digits is 224, while the sum is 21.

The square root of 812271 is about 901.2607835693. The cubic root of 812271 is about 93.3040114807.

Adding to 812271 its reverse (172218), we get a palindrome (984489).

The spelling of 812271 in words is "eight hundred twelve thousand, two hundred seventy-one".